中文摘要：

针对有芯感应炉熔沟内金属熔体流动进行了研究．基于电磁流体力学，在只考虑熔沟电磁力情况下，从场旋度和电磁力矢量分布角度上分析了熔沟内金属熔体有旋流动特点，并提出金属熔体出口流速Vext的计算表达式．利用表达式计算出400kw感应体熔沟锌熔体出口流速Vext为0．562m/s，每个感应体锌熔体循环流量达到156．5t／h，感应体熔沟进出口锌熔体温差在20℃左右，与已公布研究结果接近．同时，进行了400kW感应体低功率热态实验，其计算结果与实验结果基本吻合．

英文摘要：

Based on the analysis of distribution of electromagnetic force in the channel of channel induction furnace, a formula for estimation of outlet flow velocity was given in this paper. The estimation of outlet flow velocity was 0. 562 m/s and the cycle of molten metal Zn was 156.5 t/h in a 400 kW induc- tor. The temperature difference of molten metal Zn between inlet and outlet in the 400 kW inductor was about 20 ℃. The estimation of outlet flow velocity seemed reasonable compared with the reported data. The estimates showed reasonable correlation with experimental results in a trial for a 400 kW inductor.